Antiskidding device for vehicle-wheels.



W. H. SNYDBR.

AN'SKDDNG DEVICE FOR VEHICLE WHEELS.

APPLNATION FILED 001.211; 11112.

LOZSALLG. Panama sept. 16,1913.

UNITED srATrns Param carine.

WILLIAM H. SNYDER, OF ASHBOURNE, ENNSYLTANIA, ASSLGNGR OF CINE-FOURTH TO LOUIS C. BLOCK, ONE-FOURTH. TO FORMAN PQ'J'JZ E' FOR'IH TO WILLIAM ROSS WALTON, ALL OF ELKINS PARK. lENNSYLVANIA.

ANTISKIDDING DEVICE FOR VEHICLE-HEELS.

Specification of Letters Patent.

Patented Sept. 16, 1913.

Application filed October 2.8, 1912. Serial No. 728,172.

To all whom it may concern:

Be it known that I, WILLIAM H. SNYDER, a citizen of the United States, and resident of Ashbourne, in the county of lvlontgomery, State of Pennsylvania, have invented a new and useful Antiskidding Device 'for Vehicle- Wheels, of which the following is a specifcation.

My invention consists of a detachable anti-skidding device for vehicle-wheels in which the strain upon one grip is transmitted to all of the grips around the wheel.

It further consists of such device in wlich the grip-members are connected in a plurality of sets which are separately attached to the Wheel.

It further consists of other novel features of construction, all as will be hereinafter fully set forth.

The annexed drawings and the following description set forth in detail one mechanicalform embodying the invention, such detail construction being but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawingsv-Figure 1 represents a side view of a wheel provided with my improved anti-skidding device. Fig. l represents a view from the tread-side of one of the grips. Fig. 3 represents an edgeview of a grip. Fig. 4 represents a sectional detail view of one of the clips securing the grips to the chain. Fig. 5 represents a view of one of the clips securing the ends of the' chains to the spokes,-the spoke beingshown in section.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, numeral 1 indicates the rim or felly of a wheel having spokes, 2, and a hub, 3, and tire, 4, all of which parts may be of any desired or required construction. The grips are preferably formed from flat metallic strips, which'are bent to form tread-portions, 5, side-arms, 6, which are adapted to bear against the sldes of the tire and felly, and lever-arms, to theside-arms. The grips are preferably so formed that, when they are placed in operative position on the wheel, they will extend obliquely across the tread of the tire. Then the device is intended to be used upon double tire or upon a tire having two rows ot' blocks, the tread-portion is formed at its middle with a bend or depression, 8, which will tit in the space between the two parts or two rows of blocks of the tire. Links, 9, are plvoted in the ends of the leverarmsof the grips, and the lever-arm of leach link passes through a link upon the end of the lever-arm of the next adjoining grip. The lever-arms of the grips are inserted through links, 10, of chains, 11, and the sides of such links are clamped by curved jaws, 12, of clips, 13, secured at the bends of the grips by bolts, 14. The chains arep'referably composed of a plurality of sections,-d two being shown in the drawingsffhaving snap-hooks, 15, or similar detachable fastenings at their ends. Two-part clips,A 16,

are secured upon the spokes at the points where the ends of the "chain-sections ineet,-in the present instance to two diametrically opposed spokes,--and said clips are formed with socket portions, 17, which embrace the spoke and have laterally projecting flanges` 1S, through which pass nutted screw-bolts. 19, serving to draw the two parts of the clip together to clamp the latter upon the spoke. The clip-parts have each a circumferentially extending flange, 20, formed with holes, 21, near its periphery and at varying distances from the socketportion, which holes may be' engaged by the snap-hooks. The links, 22, upon the leverarms of the grip at one end of each section are separable or otherwise detachable from said arms, so'that they may be disconnected from the lever-arms of the adjoining grips ,when removing the sections and be conthe reference nected when placing the same.

In practice, a section is placed upon the upper portion of the wheel with the grips straddling the tire, and the snap-hooks at the ends of the chain-section are hooked in the holes of the clips upon the spokes. Such holes being at varying distances from the spoke-sockets, the chains may be tightened in accordance with the peripheral dimension of the wheel.Y ',Fhe wheel is now revolvedJ preferably by moving the vehicle, until another portion of its periphery 1s uppermost, when the second section can be put in place and secured to the clips u po'n the spokes. whereupon the detachable links prvotally secured inthe ends of theadjoin- A tion.

ing lever-arms, to make the structure peripherally continuous.

The transverse Obliquity of the tread-p0r- :aons is preferably at such angle to the sides ollthe tread of the wheel, that in traveling over the ground, one tread-portion engages the ground before the adjoining tread-pon tion leaves it, so that the strain will be divided between two grips. The bearing strain upon the grips will be distributed around the Wheel to allof the grips and upon their bearings upon the tire, by the lever-arms and links, each grip transmitting any tilting moyement caused by engagement with the ground to the next adjoining strip through the lever-arms and links, whence such strain and movement is transmitted to the next grip, and so forth, all around the wheel.

The provision of a series of holes in the flanges of the clips upon the spokes, at different distances from the spokes, not only admit of the sections being tightened upon the wheel as its tire or tread wears out, but also admits of one end of each section being drawn in one direction and let out at the opposite end, so that the grips may be adjusted to bear against different parts of the tire each time the device is applied, to prevent uneven wear of the tire by having the grips -continually bear against the same places on the tire.

The device may be ap lied to the wheel without vthe need of jacking-up the wheel from the ground, as each section may be applied and the whegl turned to apply the next by moving the vehicle in either direc- It is evident that the number of sections may be more than the two sections illustrated, according to desire` or requirements, such as according to the peripheral dimensions of the wheel. Y

The grips with their transversely oblique tread-portions' are prevented from lskewing or other displacement caused by the grips striking obstructions, by the side-arms and lever-arms of the grips bearing against'the sides of the rim and tirev of the wheel. f

Other modes of.applying the principle of my inycntion may be employed for the mode herein explained. Change may therefore be made as regards the mechanism. thus disclosed,vprovided the principlesl of construction set/forth respectively in the following claims, are employed. v i Having thus described my invention, what I claim as new and desire to secureby Letters Patent, is

1. In a device of the character stated, a series. 'of grips having treadeportions d side-arms and lever-arms at an angle to siiIl side-arms and adapted to encompass the tire and rim of a wheel, and links pivotally secured in said lever-arms and each engaging a lever-arm of the next adjoining grip at a point. beyond the side-arms thereof 1n the direction of the first mentioned lever-arms.

2. In a device of the character stated, a series of grips having tread-portions and side-arms and lever-arms at an angle to such side-arms Aand adapted to encompass the tire and rire` of a wheel, and movable connections between each lever-arm and the leverarm of the nextadjoining grip at a point beyond the side-arms of the latter `in the direction of said first mentioned lever-arms.

3. In a device of the charactervstated, a series of grips, each comprising a tread portion, side-arms and .lever-arms at an angle to said side-arms, and each grip adapted to encompass the tire and rim of .a wheel, chains secured to said grips at the angles of the side-arms and lever-arms,l and links movably secured to the ends of said leverarms and each having a lever-arm of the next adjoining grip inserted through it.

4. In a device of the character stated, a series of grips ada edto encompass the tire and rim of a wheeri, chain-sections having a plurality of said grips secured to them, clips adapted to be secured upon spokesof a wheel and having flanges formed with holes at diiferent distances from the spoke, and detachable. fastening means upon the ends of such chain-sections and adapted to engage the holes in the flanges of said clips.

5. In a device of the character stated, a series of grips having tread portions and side-arms and lever-arms at an angle to such side-arms and adapted to encompass the tire and rim of a wheel, and links movably connected with said lever-arms and each movably connected with a lever-arm of the next ad]acent grip, at a point beyond the sidearms thereof in the direction of said first mentioned lever-arms.

6. In a device of the character stated, a series of grips having lever-arms, chains Secured to said grips, and links movably secured adjacentthe ends of said leven-arms and each having a leverarm of the next adjacent grip slidably connected therewith.

7.. In a device of the character stated, a series. of grips formed with tread-portions and side-arms and lever-arms at an angle to such side-arms and adapted to encompass l'respect to the other.

8.. In a device of the character stated, a series of grips formed with tread-portions and side-arms and lever-arms at an angle to such s1de-arms, and adapted to encompass the periphery of a wheel, and connections. between the lever-arms of each grip and the lever-arms of the next adjacent grip, pivoted with respect to one arm, und slidabiy connected with respect to the other, at a point beyond the side-arms thereof, in the direction of the first mentioned lever-arm.

9. In :L device of the character stated, a series of grips formed of tread portions and 'side-arms and lever-arms at an angle t0 such side-arms, and adapted to encompass the periphery of n wheel. connections between the lever-.arms of each grip and the levernrms of the nextv adjacent grip, pivoted With respect to the one arm, and slidabie with respect to the other, and a flexible connection securing the set of grips to (he body 0i' the Wheel.

10. In :i device of ihe Character stated. :i series of grips formed with trend-poriions and side-ar1ns and lever-1111 l at nn angie to such side-Mms, and adapted to encompass the periphery of :i wheel, and connections movably secured with respect to the lever arms of :i grip, and slidzihiy connected with respect to an adjoining grip.

WILLIAM H. SNYDER.

Witnesses:

i H. M. LAFFERTY,

C. D. MCVAY.

Copies ot this patent may be obtained for tive cents each, by addressing the Commissioner of Patents,

Washington, D. C 

